Identify features of the economic business cycle. 1  Business cycles are identified as having four distinct phases: expansion, peak, contraction, and trough.  Business cycle fluctuations occur around a long-term growth trend and are usually measured by considering the growth rate of real gross domestic product.
Abstract: Rate of turn indicator for a nautical vessel, aircraft and the like indicating the rate of turn or swing in units such as degrees per unit of time from a particular course of travel.. Field of the Invention. The present invention relates to a navigational aid or nautical instrument, and more particularly, pertains to a rate of turn indicator for indicating the rate of turn from a course of travel for a vessel or other like vehicle.
Rate of twist is measured in inches of barrel length for each complete revolution of the rifling (ie. 1 turn in 10 inches, 1:7, etc.). Twist rate influences how fast the bullet spins when it exits the barrel. Spin is required to stabilize the bullet in flight so that it does not wobble or tumble (unless that is desired). If you follow American Football, it is the same concept as the quarterback putting spin on the ball when thrown.